(2006/1-1)(2005/1-1)(2004/1-1)----(1001/1-1)(1000/1-1)

分类: 作业答案 • 2022-04-17 20:42:32

问题描述：

答

=(1/2006-1)(1/2005-1)****(1/1000-1)
=-(1-1/2006)(1-1/2005)****(1-1/1000)
=-2005/2006*2004/2005****999/1000
=-999/2006